← Number problems lesson New set →

Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 811 · 40 questions
TalentJR

The method (Use the structure): n consecutive numbers with sum S: the middle (average) is S ÷ n. From sum and difference: larger = (sum + difference) ÷ 2, smaller = (sum − difference) ÷ 2. Swapping the digits changes the number by 9 × (difference of the digits). “k times another, difference D”: smaller = D ÷ (k − 1).

NameDateTime takenScore ___ / 40
  1. 1.One number is 3 times another. Their difference is 32. What is the smaller number?
  2. 2.The sum of 3 consecutive odd numbers is 159. What is the smallest of them?
  3. 3.The sum of 3 consecutive even numbers is 114. What is the smallest of them?
  4. 4.The sum of 4 consecutive numbers is 194. What is the smallest of them?
  5. 5.The digits of a two-digit number add up to 6. When the digits swap places, the number goes up by 36. What is the number?
  6. 6.The sum of 4 consecutive odd numbers is 184. What is the largest of them?
  7. 7.One number is 2 times another. Their difference is 35. What is the smaller number?
  8. 8.One number is 5 times another. Their difference is 64. What is the smaller number?
  9. 9.The digits of a two-digit number add up to 12. When the digits swap places, the number goes up by 36. What is the number?
  10. 10.The sum of 3 consecutive even numbers is 72. What is the smallest of them?
  11. 11.The sum of 4 consecutive odd numbers is 96. What is the largest of them?
  12. 12.The sum of 4 consecutive numbers is 86. What is the largest of them?
  13. 13.The sum of 5 consecutive numbers is 245. What is the largest of them?
  14. 14.The sum of 5 consecutive numbers is 65. What is the largest of them?
  15. 15.The sum of 4 consecutive even numbers is 76. What is the smallest of them?
  16. 16.The sum of 4 consecutive numbers is 158. What is the largest of them?
  17. 17.The sum of two numbers is 18 and their difference is 8. What is the smaller number?
  18. 18.One number is 2 times another. Their difference is 31. What is the smaller number?
  19. 19.The sum of 3 consecutive odd numbers is 201. What is the smallest of them?
  20. 20.The sum of 3 consecutive numbers is 141. What is the smallest of them?
  21. 21.The sum of 3 consecutive numbers is 111. What is the smallest of them?
  22. 22.The digits of a two-digit number add up to 11. When the digits swap places, the number goes up by 27. What is the number?
  23. 23.One number is 6 times another. Their difference is 30. What is the smaller number?
  24. 24.The sum of 4 consecutive odd numbers is 208. What is the smallest of them?
  25. 25.The sum of 3 consecutive numbers is 57. What is the largest of them?
  26. 26.The sum of 4 consecutive even numbers is 164. What is the largest of them?
  27. 27.The digits of a two-digit number add up to 15. When the digits swap places, the number goes up by 27. What is the number?
  28. 28.The digits of a two-digit number add up to 9. When the digits swap places, the number goes up by 45. What is the number?
  29. 29.The sum of 4 consecutive numbers is 50. What is the smallest of them?
  30. 30.One number is 2 times another. Their difference is 19. What is the smaller number?
  31. 31.The digits of a two-digit number add up to 17. When the digits swap places, the number goes up by 9. What is the number?
  32. 32.The sum of two numbers is 51 and their difference is 41. What is the larger number?
  33. 33.The sum of 4 consecutive odd numbers is 144. What is the smallest of them?
  34. 34.One number is 4 times another. Their difference is 120. What is the smaller number?
  35. 35.The sum of two numbers is 25 and their difference is 13. What is the larger number?
  36. 36.The sum of two numbers is 45 and their difference is 13. What is the larger number?
  37. 37.The sum of 5 consecutive numbers is 200. What is the largest of them?
  38. 38.The digits of a two-digit number add up to 14. When the digits swap places, the number goes up by 36. What is the number?
  39. 39.The sum of 3 consecutive numbers is 51. What is the smallest of them?
  40. 40.The sum of 3 consecutive even numbers is 90. What is the largest of them?

Answer key

  1. 16
  2. 51
  3. 36
  4. 47
  5. 15
  6. 49
  7. 35
  8. 16
  9. 48
  10. 22
  11. 27
  12. 23
  13. 51
  14. 15
  15. 16
  16. 41
  17. 5
  18. 31
  19. 65
  20. 46
  21. 36
  22. 47
  23. 6
  24. 49
  25. 20
  26. 44
  27. 69
  28. 27
  29. 11
  30. 19
  31. 89
  32. 46
  33. 33
  34. 40
  35. 19
  36. 29
  37. 42
  38. 59
  39. 16
  40. 32

Free quantitative aptitude lessons, practice and worksheets at talentjr.in/quantitative-aptitude